温度对橄榄蛏蚌耗氧和氨氮排泄的影响

The respiration metabolismand excretion of marinebivalves were studied by different researchers1—6].Themetabolic rate of bivalves is influenced by a number ofvariables,includingtemperature,body size,oxygen ten-sion,food concentration,reproductive state,activityleveland physiological condition.The excreted metabolites ofbivalves include ammonia,urea,uric acid and others,with ammonia comprising70%of the total excretion.Solenaia oleivorais a proper freshwater bivalve in China.For the consumer it has the follo...

Effects of temperature on oxygen consumption and ammonia excretion by Solenaia oleivora

The effects of water temperature on oxygen consumption rate and ammonia excretion rate of Solenaia oleivora were studied in the laboratory. The results showed that, under controlled conditions and ambient temperatures 15-30℃, the relationship between oxygen consumption rate (O) mg/h] and dry weight of soft tissue (W) g] can be represented by an allometric equation O = aWb, while the relationship between ammonia excretion rate (N) μg/h] and dry weight of soft tissue (W) g] follows also an allometric equation N = cWb. It is indicated that both metabolic rates are correlated positively with water temperature. High temperature can reduce the level of protein metabolism. The linear regression among oxygen consumption rate (O), temperature (T) and dry weight of soft tissue (W) can be described by the equation O = -0.6513 + 0.0532T+ 0. 1073W, and for ammonia this relation is N = 32.1626- 1.0566T + 1.3222W, the multiple relation coefficient was 0.9642 and 0.8921, respectively.